/*
 * Copyright 2012 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.dspl.xml;

import com.google.common.collect.BiMap;
import com.google.common.collect.HashBiMap;

/**
 * Simple class to store two-way mapping between the target namespaces of datasets and their ids.
 *
 * @author Shardul Deo
 */
public final class NamespaceMapping {

  private final BiMap<String, String> namespaceToDatasetId = HashBiMap.create();

  public void addMapping(String namespace, String datasetId) {
    namespaceToDatasetId.put(namespace, datasetId);
  }

  public String getDatasetIdForNamespace(String namespace) {
    return namespaceToDatasetId.get(namespace);
  }

  public String getNamespaceForDatasetId(String datasetId) {
    return namespaceToDatasetId.inverse().get(datasetId);
  }
}
